The ThinkVision Pro2840m features a 4K display. With a3840x2160 panel, 10 bit color, 270 nit brightness and 5 millisecond response time, the latest premium ThinkVision monitor is designed to offer an uncompromised display experience. With 157 pixels per inch and a three million to one dynamic contrast ratio, the stunning image is vibrant, sharp and detailed.The infinity glass design features touch sensitive buttons and dual speakers. A full function stand allows tilt, swivel and rotate and includes DisplayPort, HDMI and multiple USB ports.ThinkVision Pro2840m is also respectful to the environment with numerous certifications including Energy Star 6.0, TCO certification, EPEAT Gold and many others.